Organic manures at 15 t/ha had a significant effect in increasing the available P from the native and applied sources, Increasing the P application (0 to 120 kg/ha) increased the available P content in the soil. Addition of organic manure (15 t/ha) coupled with P (80 kg P,O,/ha) had significantly increased the grain yield. Organic manures at 15 t/ha application increased the straw yield.
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